You are in a room with other students and are asked to get in groups of 3. when finished, there are 21 groups of 3. how many students are in the room?

Empty box + box + empty box fill in the box is equal to 30 how

Moira has a canvas that is 8 inches by 10 inches. she wants to paint a line diagonally from the top left corner to the bottom right corner. approximately how long will the diagonal line be?

One hectometer is a) 1/1000 of a meter. b) 1/100 of a meter. c) 10 meters. d) 100 meters. e) 1000 meters.